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Join the ADCA
Membership Benefits
Newsletter Access
6 issues per year of "The Doorknob Collector" with deep historical research.
Annual Convention
Join hardware experts for auctions, trades, and education every summer.
"The membership of the Antique Doorknob Collectors of America is comprised of individuals, businesses, and organizations who collect, buy/sell/trade, and preserve antique hardware."
Official non-profit 501(c)(3) organization